[jira] [Created] (IGNITE-9828) MVCC: Continuous query failover.

[Anton Vinogradov (Jira)]

Roman Kondakov created IGNITE-9828:
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             Summary: MVCC: Continuous query failover.
                 Key: IGNITE-9828
                 URL: https://issues.apache.org/jira/browse/IGNITE-9828
             Project: Ignite
          Issue Type: Task
          Components: mvcc
            Reporter: Roman Kondakov


We need to implement failover procedure for CQ with MVCC caches. Thoughts:

* Mvcc updates should be cached in the persistent off-heap data structures instead of heap.
* CQ failover tests should be adopted for mvcc scenarios. See {{IgniteCacheQuerySelfTestSuite4}}
* We need to ensure the correctness of CQ and partition counters consistency in cases when some of TX participants are in prepared state and others are marked as rollback only. It looks like it doesn't work properly now.



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